ntfs3: loop3: Mark volume as dirty due to NTFS errors
=====================================================
BUG: KMSAN: uninit-value in longest_match_std+0x5d9/0xe00 fs/ntfs3/lznt.c:60
 longest_match_std+0x5d9/0xe00 fs/ntfs3/lznt.c:60
 compress_chunk fs/ntfs3/lznt.c:170 [inline]
 compress_lznt+0x41b/0xef0 fs/ntfs3/lznt.c:336
 ni_write_frame+0xfc8/0x1d20 fs/ntfs3/frecord.c:2835
 ntfs_compress_write+0x249c/0x3bf0 fs/ntfs3/file.c:980
 ntfs_file_write_iter+0x89b/0xd30 fs/ntfs3/file.c:1068
 do_iter_write+0xc70/0x1310 fs/read_write.c:861
 vfs_iter_write+0x88/0xe0 fs/read_write.c:902
 iter_file_splice_write+0xcef/0x1810 fs/splice.c:686
 do_splice_from fs/splice.c:764 [inline]
 direct_splice_actor+0x130/0x1e0 fs/splice.c:931
 splice_direct_to_actor+0x883/0x1180 fs/splice.c:886
 do_splice_direct+0x256/0x3d0 fs/splice.c:974
 do_sendfile+0xbe9/0x1ba0 fs/read_write.c:1255
 __do_compat_sys_sendfile fs/read_write.c:1344 [inline]
 __se_compat_sys_sendfile+0x251/0x2f0 fs/read_write.c:1327
 __ia32_compat_sys_sendfile+0xbd/0x110 fs/read_write.c:1327
 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
 __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:178
 do_fast_syscall_32+0x37/0x80 arch/x86/entry/common.c:203
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:246
 entry_SYSENTER_compat_after_hwframe+0x70/0x82

Uninit was created at:
 __alloc_pages+0x9f6/0xe90 mm/page_alloc.c:5572
 alloc_pages+0xab0/0xd80 mm/mempolicy.c:2287
 folio_alloc+0x42/0x120 mm/mempolicy.c:2297
 filemap_alloc_folio+0xb2/0x460 mm/filemap.c:972
 __filemap_get_folio+0xe4b/0x1920 mm/filemap.c:1966
 pagecache_get_page+0x4f/0x290 mm/folio-compat.c:98
 find_or_create_page include/linux/pagemap.h:612 [inline]
 ntfs_get_frame_pages+0xdc/0xa00 fs/ntfs3/file.c:778
 ntfs_compress_write+0x1a9d/0x3bf0 fs/ntfs3/file.c:929
 ntfs_file_write_iter+0x89b/0xd30 fs/ntfs3/file.c:1068
 do_iter_write+0xc70/0x1310 fs/read_write.c:861
 vfs_iter_write+0x88/0xe0 fs/read_write.c:902
 iter_file_splice_write+0xcef/0x1810 fs/splice.c:686
 do_splice_from fs/splice.c:764 [inline]
 direct_splice_actor+0x130/0x1e0 fs/splice.c:931
 splice_direct_to_actor+0x883/0x1180 fs/splice.c:886
 do_splice_direct+0x256/0x3d0 fs/splice.c:974
 do_sendfile+0xbe9/0x1ba0 fs/read_write.c:1255
 __do_compat_sys_sendfile fs/read_write.c:1344 [inline]
 __se_compat_sys_sendfile+0x251/0x2f0 fs/read_write.c:1327
 __ia32_compat_sys_sendfile+0xbd/0x110 fs/read_write.c:1327
 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
 __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:178
 do_fast_syscall_32+0x37/0x80 arch/x86/entry/common.c:203
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:246
 entry_SYSENTER_compat_after_hwframe+0x70/0x82

CPU: 0 PID: 6423 Comm: syz-executor.3 Not tainted 6.2.0-syzkaller-81151-g224e1375d540 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
=====================================================